<template>
    <div :class="{'hidden':hidden}" class="pagination-container">
        <el-pagination
                :background="background"
                :current-page.sync="currentPage"
                :page-size.sync="pageSize"
                :layout="layout"
                :page-sizes="pageSizes"
                :total="total"
                v-bind="$attrs"
                @size-change="handleSizeChange"
                @current-change="handleCurrentChange"
        />
    </div>
</template>

<script>

    export default {
        name: 'Pagination',
        props: {
            total: {
                required: true,
                type: Number
            },
            page: {
                type: Number,
                default: 1
            },
            limit: {
                type: Number,
                default: 20
            },
            layout: {
                type: String,
                default: 'total, sizes, prev, pager, next, jumper'
            },
            background: {
                type: Boolean,
                default: true
            },
            autoScroll: {
                type: Boolean,
                default: true
            },
            hidden: {
                type: Boolean,
                default: false
            },
            sizes:{
                type: Array,
                default: () => [10],
            }
        },
        computed: {
            currentPage: {
                get() {
                    return this.page
                },
                set(val) {
                    this.$emit('update:page', val)
                }
            },
            pageSizes:{
                get() {
                    let size=this.total/this.pageSize;
                    for (let i=1;i<size;i++){
                        this.$set(this.sizes,i,(i+1)*this.pageSize);
                    }
                    return this.sizes;
                }
            },
            pageSize: {
                get() {
                    return this.limit
                },
                set(val) {
                    this.$emit('update:limit', val)
                }
            }
        },
        methods: {
            handleSizeChange(val) {
                this.$emit('pagination', { page: this.currentPage, limit: val })
            },
            handleCurrentChange(val) {
                this.$emit('pagination', { page: val, limit: this.pageSize })
            }
        }
    }
</script>

<style scoped>
    .pagination-container {
        background: #fff;
        padding: 32px 16px;
    }
    .pagination-container.hidden {
        display: none;
    }
</style>
